Imagine a state of affairs in which governments are devoted exclusively to the task of protecting the individual’s life, health, and property against violent and fraudulent aggression. In such a world the frontiers are drawn on the maps, but they do not hinder anybody from the pursuit of what he thinks will make him more prosperous. No individual is interested in the expansion of the size of his nation’s territory, as he cannot derive any gain from such an aggrandizement. Conquest does not pay and war becomes obsolete.